The ruling is interesting because the RIAA can charge up to $30,000 USD per every "pirated" song but usually charges around $750.
To give a background on the case, in January of last year Warner Brothers, Sony BMG, Maverick, UMG, and Arista Records sued Steve Harper after MediaSentry said that someone on Harper's computer was downloading copyrighted songs from Fasttrack. Harper had of course not downloaded any such music, but his daughter Whitney had. By December she had been added as a defendant to the suit.
She is now accused of downloading 39 copyrighted songs through Kazaa. The original MediaSentry investigation found that Whitney was sharing 544 audio files through Kazaa but after a Windows reformat, the files were effectively deleted.
Whitney now claims that she used Kazaa to listen to songs but thought the program was a streaming program like Imeem. She was unaware she was downloading the tracks or sharing them.